/* Copyright (c) 2001-2011, The HSQL Development Group
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 * modification, are permitted provided that the following conditions are met:
 *
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 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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package org.hsqldb.persist;

import org.hsqldb.TableBase;
import org.hsqldb.lib.LongKeyHashMap;

public class PersistentStoreCollectionDatabase
implements PersistentStoreCollection {

    private long                 persistentStoreIdSequence;
    private final LongKeyHashMap rowStoreMap = new LongKeyHashMap();

    public void setStore(Object key, PersistentStore store) {

        long persistenceId = ((TableBase) key).getPersistenceId();

        if (store == null) {
            rowStoreMap.remove(persistenceId);
        } else {
            rowStoreMap.put(persistenceId, store);
        }
    }

    public PersistentStore getStore(Object key) {

        long persistenceId = ((TableBase) key).getPersistenceId();
        PersistentStore store =
            (PersistentStore) rowStoreMap.get(persistenceId);

        return store;
    }

    public void releaseStore(TableBase table) {

        PersistentStore store =
            (PersistentStore) rowStoreMap.get(table.getPersistenceId());

        if (store != null) {
            store.release();
            rowStoreMap.remove(table.getPersistenceId());
        }
    }

    public long getNextId() {
        return persistentStoreIdSequence++;
    }
}
